Reporting Services : Installing 32bit version on a 64bit server

SQL 2005's 'System Configuration Check' reported a version clash on my Windows 2008 box when trying to install Reporting Services.
" 64-bit ASP .Net is Registered. Required 32-bit ASP .Net to install Microsoft Reporting Service 2005 (32.bit). "
Sounds a bit backwards to me!
I needed to revert to 32-bit .NET on 64-bit IIS 7.0 (which is basically done by changing which DLL IIS is using)
Here's what to do...

1) from a command prompt >

C:\>cd C:\inetpub\AdminScripts

C:\inetpub\AdminScripts>cscript adsutil.vbs set w3svc/AppPools/Enable32bitAppOnWin64 1 Microsoft (R) Windows Script Host Version 5.7 Copyright (C) Microsoft Corporation. All rights reserved. Enable32bitAppOnWin64 : (BOOLEAN) True


2) Install Reporting Services (and SP2, and hotfixes... yawn...)

3) Configure Reporting Services (subject of another post, i'm sure...)


see also http://technet.microsoft.com/en-us/library/ms143293.aspx